Question

Find the LCM and HCF of the following integers by the prime factorization method
(i) 12, 15 and 21 ​

Answer 1

Answer:

l.c.m of (12,15,21)

12=2×2×3

15=3×5

21=3×7

therefore l.c.m is 2×2×3×5×7=421

Answer 2

Pls find ur answer in the below attachments